MANCHESTER, England (Reuters) - British police are investigating a network in their probe into the Manchester suicide bombing that killed 22 people on Monday, the head of Greater Manchester Police said.

“I think it’s very clear that this is a network that we are investigating,” Chief Constable Ian Hopkins told reporters.

“And as I’ve said, it continues at a pace. There’s extensive investigations going on and activity taking place across Greater Manchester as we speak.”

Writing by Estelle Shirbon and David Milliken; editing by Guy Faulconbridge